Warp stop-motion for looms.



No. 813,765. EATENTED PEB. 27, 1906.

H. G. BAKER.

WARP STOP MOTION FOR LOOMS. AIPLIOATION FILED seza, 1905.

' rientrino sterne HARRY G. BAKER;l OF l/VORCESTER, MASSAUHUSE'S,ASSiGiTUR TU CROMPTON t KNOWLES LM WORKS, A CORPORATION 0F YMAS-SACHUSETTS.

No. eist/e5.

Specification of Letters Patent.

Patented Feb. 27, i906;

Application iiled September 28,1905. Serial No. 280,426.

To all whom it may concern:

Be it known that I, HARRY G. BAKER, s citizen of the United States,residing et Worcester, in the county of Worcesterl and State oiMessachusetts, have invented certain new and useful Improvements in WerpStop-Motions for Looms, of which the following isn specil My inventionrelates to werp stop-motions for looms end to that class oi werpstop-nictionsin which the breaking of a Warp-thread allows the dropdevice supported thereon to be lowered 'and to close the electriccircuit in cese of en electric werp stop-motion, orto bev engaged by@moving part in case of e mechanical Warp stop-motion, to causemechanism to be ,operated to stop the loom in the usual and well-knownwey. ln the ordine@7 construction 0i werp stop-motions of the ciessreferred' to the stands or frames supporting the werp lesse-rods and theterminels or the'guide-rods for the drop devices are rigidlyv secured tothe loom frames or sides and held in e iixed position. By thisconstruction the warp-threads are prevented from having e free vmotionup and down, ectueted bv the hernesses and b v the operation of the wip-roll.

The object of my invention is to improve u on the construction of Werpstop-motions o the class referred to, and more partie-ulsriv to providee werp stop-motion supported by the werp-threads and verticali)Y movablewith the werp-threads in their upand-down motion end prenerzibl')redjustebly connected with the loom-freine or some stetionery part of theloom to prevent movement of the wer stop-motion in the direction oftheiengt 1 of the werp-threiids.

My invention consists in certeinnovel features of construction ofmyimprovements, ns will be hereinafter fully described.

I have shown in the drawings my improvements in connection with enelectric werp stop-motion oi" ordinary ind well-known construction endoperation.

Referring to the drawings, Figure 1 is :i rear perspective view of anelectric werp stop-motion embodying my improvements and some of theparts connected therewith.

,Fig 2 is ny central vertical section through the parts shown in Fig. land looking in the i direction of arrow a, seme figure. @ne oi the dropdevices is shown in its lowered position.

In the ecconipenving drawings, l is e detached portion of :i loom sideor trame on one end oi the loom. i

2 is the Whip-roll, journele'd in the loom sides or frames in the usuelwey.

The werp-threads 3 pass over the whip-roll 2 from the werp-boem (notshown) et the lower part of the loom and are divided in the usuel Wayinto two planes which cross noch other intermediate the two lesse-rods-i und are held epertby seid lease-rods, which may be supported andcarried by the werpthreeds and have an up-snd-down motion in e verticalplone vwith the werp-threads es they are actuated by the harnesses (notshown) in the usuel wey.

To theends ci the lense-rods -fi ere rigidly secured zi stuud or i'rume5, forming the end stands or frames of the warp stop-motion. SupportedonI and secured tothe end stands or frames 5 are the two guide-rods 6for the part of the drop devices. The lower port or .the drop deviceshave in this instance openend slots, through which the werp-threads 3pass' to support the drop devices in their raised position in theordinary wey. llzich guide-rod 6 acts in thi: instzinec ns one ot' theterminals of un electr circuit. liltending between the drop devices 7und supported upon und secured et nach end io the end stands or framesis :i bnr 8, forming the opposite terminal oi' the electric circuit, Awire 9 of one pole' (positive) is connected to the terminal 8, und ewire i() of the opposite pole (nega-tivo) is connected to euch oi' theterminals 6, and seid wires lend to mechaniinism (not shown) forstopping the loom in the usuel und Well-known wey.

it will be understood that n. drop device is supported on eachworp-threuti find the? upon the breaking oi any Wurp-tln'ind the dropdevice supported thereon is lowered until the side projection engagesthe central terminal 8, indicated in Fig. 2, to close the circuit :indcause niechzinisni to he operated to stop the loom in the usual undweli-knmvn .wav

drop devices 7,which in this instance extend through elongated openings7 in the upper' ln order vto prevent the lease-rods Lland the otherparts of the warp stop-motion from having a movement inthe direction ofthe length of the warp-threads as the warpn threads are drawn throughthe loom and also to provide means for adjusting the position ol thewarp stop -motion relative to the whip-roll, .if desired, l providemeans for connecting the same withsomc stationary part of the loom; butthese means do not prevent the free vertical or up-anddown movement ofthe several parts olz the warp stop-motion with the warp-threads. inthis instance I provide a boss or hub 11 on cach end frame 5, which hasa hub or s leeve 1 1/ therein, of non-con ducting material, into whichextends and is' secured b a set-screw 12 a wire 13. The' wire 13 ismthis'instance bent atits other end, 'at an angle to extend outwardly andpass. loosely through a non-conducting hub orl sleeve 14, iiast on thehead or hub 15. on theI upper end of a vertically-moving stud 15, whchis adjustably secured by a set-screw 1 in a hub or boss 17 on a stand17, secured to the loom side or i'rame 1. (See F ig. 2.) l i In order tolessen the weight of the warpstop-motion on the warp-threadsand to as-`sist in supporting the warp stop-motion, I may rovide a spiral coiledspring 18 or its equiva' ent at each side or end of the warp sto -motionwhich spring in this instance enciprcies the outwardly-pi'ojectiiig endsof the bent wires 13 and is secured at one end to the head 151 on thestud 15 and at its other end to a collar 19, which is rotatablyadjustable on the end of the wire 13 to vary the tension of the; spring18 and secured thereon. by a setscrew 20. i

in order to hold the warp stop-motion in its raised position in case theoperator wishes to'lind a broken thread or for any other rea-` semipreferably rovide a stand or arm 21 at each side or en( or" the warpstop-motion, which is preferably ivotally supported in this instance ona stu 22 on. an extension 17 on the boss 17 on the stand 1 7. Eaclrarm21 has a forked u )per end, which is adapted to be moved un er the wires13 lby raising said wires and the warp stop-motion and receivc saidwires 13 in the forked end and -support the same and withthemthe warpstopinotion, shown in the drawings.

it will be seen that in my improvements the several parts of the warpstopmotion, including the lease-rods and the terminals or guide-rods'lier the drop-wires, will have a vl'ree up -anddown motion with the warthreads, as the same are supported direct y on the warp-threads and atthe same time are connected Awith the statifmary arts of the loom toprevent n iovement of t ie warp stop-motion in thc'directiim of' thelength ot' the warp-threa lsln caso the spring 18 or its equivalent isstop-motion on the warp-threads the whole weight of, 'thewarpfstop-motion will be supported by the warp-threads, thewire 13turning loosely in the hub lain the head 15 on the stud 15. in case thespring 18 or its equivalent is used to lessen the weight or the warpstop-motion on the warp-threads said spring acts topa-rtially supportthe warp stopmotion or to take a portion of the strain of the warpstop-motion oli the warp-threads,'

as will be well understood.

The advzmtages of myimprovcments will be readily appreciated by thoseskilled in the art,fand they may be adapted to be used inconnection'with mechanical warp stop-mo tions and different classes ofelectric warp sto -motions t will be understood that the details oiconstruction of my improvements may be varied, .if desired.

Instead of a spring 18 a weight or an equivalent device may be used.

' Having thus described my invention, what 'I claim as new, and desireto secure by Letters Patent, is-

1. Aloom warp sto -motion, supported by the warp-threads, an movable upand down therewith in a vertical plane'. j

2. A. loom warp stop-mo tion, supported by the warp-threads, and movableup and down therewith in a vertical plane, and adj ustably connectedWith a stationary part of the loom.

3. Ateloom warp sto -motion, supported by the warp-threads, an movableup and down in a vertical plane, and adjustably connected with astationary part of the loom, to be moved in the direction of the lengthof the warp-threads.

4. A loom warp stop-motion, supported by the warp-threads, and. movableup and downtherewith in a vertical plane, and means for lessening theweight of the Warp stop-motion on the warp-threadsf 5. A loom warpVstop-rriotion, supported by the warp-threads, and movable up and downtherewith in a vertical plane, and means for adjusting the weight of thewarp stop-motion on thel warpthreads.

6. Awarp stop-motion folooms, compris# ing lease-rods and guiderods forthe dro devices, sup orted by thewarpthreads to iiave a vertica .up-anddown movement therewith, and means for connecting the leaserods andguide-rods. y

'7. A loom warp stopmiotion, supported by the warp-threads, and movableu and down therewith in a vertical plane, ai; connected with astationary part of the loom.

8. The combi nationw'ith warp-threads divided into two planes whichcross each other intermediate two lease-rode, of a warp stop motionsupported. by saidwarp-threads and having' as a part th creol saidlease-rods- 9. The combination with warp-threads difnot used to lessenthe Weight of the warp vided into two planes which cross each other Yrmotion supported by seid Warp-threads, and

with, and means for lessening the Weight of the War stop-motion on theWar -threads 11. he combination with a oom Warp sto -motion comprisinglease-rods and guideio s for the drop devices, supported by theWarpthreads to have e vertical lip-and-down movement therewith, of meansfor holding the WarpAstop-motion in its raised position.

HARRY G. BAKER.

intermediate two lease-rods, of a 'Warp stopcomprising said lease-rodsItwo end frames secured to said lease-rods, guide-rods or terminels fordrop devices secured to said end frames, and said drop devices, and acentral, baifor terminal extending between the drop i devices andsecured to said end iTemes.

i0. A loom Warp stop-motion, comprising 1ease-rods and guide-rods forthedrop de- Witnesses: vices, supported by the Werp-threads to have J.C. DEWEY, a vertical up-anddown movement theie- M HAAS.

